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George Bush Intcntl

$380+ Cheap flights from Portugal to George Bush Intcntl (IAH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — IAH
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Portugal to George Bush Intcntl

Keep the following information in mind while searching for Portugal to George Bush Intcntl flight deals. Data was last updated August 1, 2025.

Round-trip from

$679
(Kiwi.com)

One-way from

$380
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,109
From Portugal to Houston George Bush Intcntl
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One-way flight from Portugal to Houston George Bush Intcntl
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Highest demand for flights based on searches. 17% potential increase in price ($191 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Portugal to George Bush Intcntl

Cheapest flights from Portugal to George Bush Intcntl
Explore the most affordable flight options available from Portugal to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:55 pmLIS - IAH
1 stop23h 47mMultiple Airlines
Thu 9/2512:58 pmIAH - LIS
2 stops48h 52mMultiple Airlines
Deal found 7/30$679
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/95:00 amLIS - IAH
2 stops18h 59mDelta
Thu 10/163:10 pmIAH - LIS
2 stops17h 40mDelta
Deal found 7/30$786
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:20 amLIS - IAH
2 stops20h 31mAmerican Airlines
Wed 10/1510:52 amIAH - LIS
2 stops16h 13mAmerican Airlines
Deal found 7/30$817
This Gotogate deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/247:05 pmLIS - IAH
2 stops34h 14mBritish Airways
Sat 9/61:18 pmIAH - LIS
2 stops38h 47mBritish Airways
Deal found 7/31$837
This Iberia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:25 amLIS - IAH
2 stops21h 18mIberia
Wed 10/156:23 pmIAH - LIS
2 stops23h 02mIberia
Deal found 7/30$853
This Finnair deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:35 amLIS - IAH
2 stops41h 59mFinnair
Thu 10/162:23 pmIAH - LIS
2 stops50h 47mFinnair
Deal found 7/30$1,018
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:40 amLIS - IAH
1 stop36h 55mUnited Airlines
Sun 8/247:50 pmIAH - LIS
1 stop32h 40mUnited Airlines
Deal found 7/31$1,091
This Air Canada deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1311:25 amLIS - IAH
2 stops16h 47mAir Canada
Sun 8/1710:00 amIAH - LIS
1 stop17h 20mAir Canada
Deal found 7/30$1,224

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to George Bush Intcntl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2025.
Use the filters below to find and compare flights from Portugal to Houston George Bush Intcntl Airport that are best for you.

Fly from

Portugal

Fly to

George Bush Intcntl

Route

Depart

Return

Price

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 9/12

5:55 pm-11:42 am

1 stop23h 47m

Houston George Bush Intcntl

Thu 9/25

12:58 pm-7:50 pm

2 stops48h 52m

$679

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 1/21

5:30 am-1:55 pm

1 stop14h 25m

Houston George Bush Intcntl

Sun 1/25

6:00 pm-5:30 pm

2 stops17h 30m

$783

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 1/19

11:25 am-11:59 pm

2 stops18h 34m

Houston George Bush Intcntl

Sun 1/25

12:30 pm-10:35 am

2 stops16h 05m

$789

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 1/17

10:30 am-9:35 pm

1 stop17h 05m

Houston George Bush Intcntl

Sun 1/25

3:50 pm-5:45 pm

1 stop19h 55m

$791

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 1/17

10:30 am-9:35 pm

1 stop17h 05m

Houston George Bush Intcntl

Thu 1/22

4:30 pm-6:00 pm

2 stops19h 30m

$792

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 1/17

11:20 am-9:39 pm

1 stop16h 19m

Houston George Bush Intcntl

Thu 1/22

11:50 am-9:20 am

1 stop15h 30m

$844

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 10/10

8:25 am-11:43 pm

2 stops21h 18m

Houston George Bush Intcntl

Wed 10/15

6:23 pm-11:25 pm

2 stops23h 02m

$853

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 1/18

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Wed 1/21

6:55 pm-10:50 pm

1 stop21h 55m

$918

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 10/7

6:25 am-8:24 am

2 stops31h 59m

$380

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 9/27

11:25 am-9:24 am

2 stops27h 59m

$670

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 15 results
1
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Best time to book a flight from Portugal to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Portugal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Houston George Bush Intcntl Airport

What is the cheapest month to book a flight from Portugal to Houston George Bush Intcntl Airport?

Currently, August is the cheapest month in which you can book a flight from Portugal to Houston George Bush Intcntl Airport (average of $241). Flying from Portugal to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to George Bush Intcntl. Reviews last updated August 1, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Finnair from Portugal to Houston George Bush Intcntl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Turkish Airlines
7.3
Good
3,933 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Portugal to George Bush Intcntl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Portugal to Houston George Bush Intcntl Airport one-way?

    One-way options have recently been found by users for as low as $670 on Aer Lingus. Other airlines that offer cheap prices include Turkish Airlines from $693 and British Airways from $714 one-way.

  • Can I find deals for flights from Portugal to George Bush Intcntl that include hotel bookings?

    Yes. In addition to deals on Portugal to George Bush Intcntl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to George Bush Intcntl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to George Bush Intcntl.

  • Can I find deals for business class flights from Portugal to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Portugal to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portugal to Houston George Bush Intcntl Airport?

    Currently, August is the cheapest month in which you can book a flight from Portugal to Houston George Bush Intcntl Airport (average of $241). Flying from Portugal to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Montgomery
Spring
Humble
Conroe
The Woodlands
Tomball
Katy
Jersey Village

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Alternative routes for Portugal to George Bush Intcntl

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Portugal to George Bush Intcntl

Discover the top airline that operate flights from Portugal to George Bush Intcntl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$682Average$861FlexibilityNo cancel feeOn-time70%

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